JLA Vol:24 Iss:4 (In-process measuring procedure for sub-100 nm structures)

Authors:
M. Zimmermann
A. Tausendfreund
S. Patzelt
G. Goch
Bremen Institute for Metrology, Automation and Quality Science (BIMAQ), Linzer Straße 13, 28359 Bremen, Germany

S. Kieß
M. Z. Shaikh
M. Gregoire
S. Simon
Institute of Parallel and Distributed Systems (IPVS), Universita¨tsstraße 38, 70569 Stuttgart, Germany

Fast and nondestructive laser light scattering measurements characterize the quality of surfaces with sub-100 nm structures during the production process. The aim is to detect defective surface structures. The measurement procedure is based on a primary c...

JLA Vol:24 Iss:4 (Laser-assisted nanofabrication of carbon nanostructures)

Authors:
Yun Shen Zhou
Wei Xiong
Jongbok Park
Department of Electrical Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0511, USA

Min Qian
Department of Electrical Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, 68588-0511, USA and Department of Physics, East China Normal University, Shanghai 200062, People’s Republic of China

Masoud Mahjouri-Samani
Yang Gao
Department of Electrical Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0511, USA

Lan Jiang
Department of Mechanical and Automation Engineering, Beijing Institute of Technology, Bei...

JLA Vol:24 Iss:4 (Materials and technologies for fabrication of three-dimensional microstructures with sub-100 nm feature sizes by two-photon polymerization)

Authors:
Frank Burmeister
Institute of Applied Physics, Friedrich-Schiller-Universita¨t Jena, D-07743 Jena, Germany and Fraunhofer Institute for Applied Optics and Precision Engineering IOF, D-07745 Jena, Germany

So¨nke Steenhusen
Ruth Houbertz
Fraunhofer Institute for Silicate Research ISC, D-97082 Wu¨rzburg, Germany

Uwe D. Zeitner
Stefan Nolte
Andreas Tu¨nnermann
Institute of Applied Physics, Friedrich-Schiller-Universita¨t Jena, D-07743 Jena, Germany and Fraunhofer Institute for Applied Optics and Precision Engineering IOF, D-07745 Jena, Germany

The fabrication of sub-100 nm featu...

JLA Vol:24 Iss:4 (Morphology of nanoscale structures on fused silica surfaces from interaction with temporally tailored femtosecond pulses)

Authors:
Lars Englert
Matthias Wollenhaupt
Cristian Sarpe
Dirk Otto
Thomas Baumert
Institut fuer Physik and CINSaT, Universitaet Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany

Laser control of two basic ionization processes on fused silica, i.e., multiphoton ionization and avalanche ionization, with temporally asymmetric pulse envelopes is investigated. Control leads to different final electron densities/energies as the direct temporal intensity profile and the time inverted intensity profile address the two ionization processes in a different fashion. This results in observed different thresholds for material modification o...

JLA Vol:24 Iss:4 (Nano structures via laser interference patterning for guided cell growth of neuronal cells)

Authors:
Elke A. Bremus-Koebberling
Stefan Beckemper
Fraunhofer Institute for Lasertechnology, Steinbachstr. 15, 52074 Aachen, Germany

Beate Koch


Arnold Gillner
Fraunhofer Institute for Lasertechnology, Steinbachstr. 15, 52074 Aachen, Germany and Chair for Laser Technology, Technical University Aachen, Germany

Laser interference patterning is a versatile tool for the fabrication of nano patterns. For this study, regular nano line patterns with feature sizes between 100 and 1000 nm were produced on polymers polyimide, polyetheretherketone, and polydimethylsiloxane. Cell culture experiments with B35 neuronal cells revealed the al...

JLA Vol:24 Iss:4 (Nanogratings in fused silica: Formation, control, and applications)

Authors:
So¨ren Richter
Matthias Heinrich
Sven Do¨ring
Andreas Tu¨nnermann
Stefan Nolte
Ulf Peschel
Array

The authors investigated the formation of periodic subwavelength structures, so-called nanogratings, in the volume of fused silica. These self-organized structures emerge upon irradiation with ultrashort laser pulses, undergoing three distinct stages of growth from randomly distributed nanostructures to extended domains with uniform periodicity. The experiments revealed that the cumulative action of subsequent laser pulses is mediated by dangling-bond type defects. On shorter time scales, transient self t...

JLA Vol:24 Iss:4 (Optical trap assisted laser nanostructuring in the near-field of microparticles)

Authors:
Ulf Quentin
Karl-Heinz Leitz
Lutz Deichmann
Ilya Alexeev
Michael Schmidt
Array

Particle based near-field nanostructuring is an excellent possibility to overcome the optical diffraction limit in laser based material processing. In the near-field of microspheres which are irradiated with pulsed laser radiation, it is possible to generate nanoholes with diameters below 100 nm using a laser wavelength of 800 nm. To improve this approach, it is possible to position the microparticles with an optical trap to generate arbitrary structure geometries. In this paper, the authors describe the basic principle of optical trap assisted na...

JLA Vol:24 Iss:4 (Structural study of near-field ablation close to plasmon-resonant nanotriangles)

Authors:
Andreas Kolloch
Paul Leiderer
Department of Physics, University of Konstanz, Universita¨tsstr. 10, D-78457 Konstanz, Germany

Shyjumon Ibrahimkutty
Daniel Issenmann
Anton Plech
Institute for Synchrotron Radiation, Karlsruhe Institute of Technology, Postfach 3640, D-76021 Karlsruhe, Germany

The optical near fields in close vicinity to plasmonic nanoscale objects show a considerable enhancement of the electrical field and are localized to dimensions much less than the wavelength of light. The authors show that an ablation process caused by the near-field enhancement of femtosecond laser pulses pattern the substrate...

JLA Vol:24 Iss:4 (Sub-100 nm material processing and imaging with a sub-15 femtosecond laser scanning microscope)

Authors:
Karsten Ko¨nig
Aisada Uchugonova
Martin Straub
Huijing Zhang
Martin Licht
Department of Biophotonics and Laser Technology, Faculty of Physics and Mechatronics, Saarland University, D-66123 Saarbru¨cken, Germany

Maziar Afshar
Dara Feili
Helmut Seidel
Department of Micromechanics, Microfluidics and Microactorics, Faculty of Physics and Mechatronics, Saarland University, D-66123 Saarbru¨cken, Germany

Low mean powers of 1–10 mW are sufficient for material nanoprocessing when using femtosecond laser microscopes. In particular, near infrared 12 fs laser pulses at pe...

JLA Vol:24 Iss:4 (Synthesis of hybrid microgels by coupling of laser ablation and polymerization in aqueous medium)

Authors:
Philipp Nachev
Funktionale und Interaktive Polymere, Institut fu¨r Makromolekulare und Technische Chemie, RWTH Aachen University, Forckenbeckstr. 50, D-52074 Aachen, Germany

Danielle D. van ’T Zand
Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, D-45141 Essen, Germany

Vincent Coger
Department of Plastic, Hand- and Reconstructive Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany

Philipp Wagener
Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universit...